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Re-refinement of damage free X-ray structure of bovine cytochrome C oxidase at 1.9 ångström resolution

Analyse Re-refinement of damage free X-ray structure of bovine cytochrome C oxidase at… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
7Y44
Type
protein
Length
3,558 residues
Chains
26
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Cytochrome C oxidase subunit 1; Cytochrome C oxidase subunit 2; Cytochrome C oxidase…
EC
7.1.1.9
UniProt
P00396, P68530, P00415, P00423, P00426, P00428, P07471, P00429, P04038, P07470, P13183, P00430, P10175
Ligands
CHD, PGV, TGL, PEK, HEA, CDL, CUA, PSC, NA, CU, MG, ZN, PER, PO4
Pockets
20 · best druggability 0.91

Structure

x-ray diffraction · 13 distinct chains · 59% helix, 6% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, NCytochrome C oxidase subunit 1 (EC 7.1.1.9)protein51471% helix, 1% strandP00396
B, OCytochrome C oxidase subunit 2 (EC 7.1.1.9)protein22735% helix, 26% strandP68530
C, PCytochrome C oxidase subunit 3 (EC 7.1.1.9)protein25976% helix, 0% strandP00415
D, QCytochrome C oxidase subunit 4 isoform 1protein14452% helix, 3% strandP00423
E, RCytochrome C oxidase subunit 5Aprotein10564% helix, 1% strandP00426
F, SCytochrome C oxidase subunit 5B, mitochondrialprotein9815% helix, 27% strandP00428
G, TCytochrome C oxidase subunit 6A2protein8427% helix, 2% strandP07471
H, UCytochrome C oxidase subunit 6B1protein7959% helix, 1% strandP00429
I, VCytochrome C oxidase subunit 6Cprotein7371% helix, 1% strandP04038
J, WCytochrome C oxidase subunit 7A1protein5867% helix, 0% strandP07470
K, XCytochrome C oxidase subunit 7Bprotein4955% helix, 0% strandP13183
L, YCytochrome C oxidase subunit 7C, mitochondrialprotein4659% helix, 0% strandP00430
M, ZCytochrome C oxidase subunit 8Bprotein4367% helix, 2% strandP10175

Ligands and binding sites

  • CHD · Cholic acid · ligand · 11 copies · chains C, J, A, P, G, N, O, L, M, W, B, T, X, Y, Z
  • PGV · (1R)-2-{[{[(2S)-2,3-dihydroxypropyl]oxy}(hydroxy) phosphoryl]oxy}-1-[(palmitoyloxy)methyl]ethyl (11E)-octadec-11-enoate · ligand · 8 copies · chains A, C, D, K, M, F, H, P, T, N, Q, X, Z, G, U, S
  • TGL · Tristearoylglycerol · ligand · 6 copies · chains A, B, I, D, L, N, O, V, Q, Y
  • PEK · (1S)-2-{[(2-aminoethoxy)(hydroxy)phosphoryl]oxy}-1-[(stearoyloxy)methyl]ethyl (5E,8E,11E,14E)-icosa-5,8, 11,14-tetraenoate · ligand · 6 copies · chains A, C, G, F, N, O, T, P, B, S
  • HEA · Heme-A · ligand · 4 copies · chains A, B, N, O
  • CDL · Cardiolipin · ligand · 4 copies · chains C, J, G, N, O, P, W, A, B, T
  • CUA · Dinuclear copper ion · ligand · 2 copies · chains B, O
  • PSC · (7R,17E,20E)-4-hydroxy-N,N,N-trimethyl-9-oxo-7-[(palmitoyloxy)methyl]-3,5,8-trioxa-4-phosphahexacosa-17,20-dien-1-aminium 4-oxide · ligand · 2 copies · chains A, B, E, I, N, O, R, V
  • NA · Sodium ion · metal · 4 copies · chains A, C, N, P
  • CU · Copper (II) ion · metal · 2 copies · chains A, N
  • MG · Magnesium ion · metal · 2 copies · chains A, B, N, O
  • ZN · Zinc ion · metal · 2 copies · chains F, S
  • PER · Peroxide ion · ion · 2 copies · chains A, N
  • PO4 · Phosphate ion · ion · 2 copies · chains H, U
  • EDO · 1,2-ethanediol · additive · 49 copies · chains A, M, F, B, C, H, G, J, L, D, N, Z, Q, S, O, P, U, Y, W, T, R
  • DMU · Decyl-beta-D-maltopyranoside · additive · 23 copies · chains B, C, J, D, G, K, A, L, M, O, V, P, W, N, Q, X, T, Y, Z

Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.

Pockets

20 pockets found on a 1 Å grid, 20 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
111210.910.93123HEA, PER
211160.910.93119HEA, PER
38150.860.8884PGV
410790.860.8683PGV
510400.840.8598EDO

Interfaces

80 interfaces between chains.

  • A–B · 3624 Ų buried · 37 hydrogen bonds · protein-protein
  • N–O · 3613 Ų buried · 38 hydrogen bonds · protein-protein
  • N–P · 2636 Ų buried · 17 hydrogen bonds · protein-protein
  • A–C · 2625 Ų buried · 17 hydrogen bonds · protein-protein
  • N–Y · 1753 Ų buried · 20 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 8 modified, 4 disulfide (disulfide, formylation, acetylation, phosphorylation).

Compared structures

  • 7Y44 · Re-refinement of damage free X-ray structure of bovine cytochrome c oxidase at 1.9… · the same entry in another collection · chain K against K, TM-score 1.00

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